Namaste,
Giving below a list of 65 modern Sanskrit novels compiled from various sources. A few of them have not yet been published.
I humbly request scholars of BVP to point out titles of Sanskrit novels that are not included in this list. Also, kindly point out if any titles in this list are wrongly classified as novels.
List of Modern Sanskrit Gadyakavyas
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1. Abhinava Kadambari (Trimurti Kalyana) of Ahobila Narasimha (not published)
2. Abhinava Kadambari of Dhundiraja - NB Godbole 1889 (NSP)
3. Arjunamalakaram with Hindi Translation - Chandana Muni 1969
4. Balidanam - NC Kelakar, Vasudeva Sastri Latkar 1940
5. Bhishma Vijaya of Lakshmana Suri with Translation & Notes 1909 (UOM)
6. Bilvamangalam Gadyakavyam - Umesh Sastri 1986
7. Chandra Mahipati - Srinivasa Sastri 1956
8. Chandramauli of Rajamma
9. Damayanti - Ramagati Sarma 1868
10. Daridranam Hridayam (Rajadharma) - Narayana Sastri Khiste 1930
11. Dharma Vyatikrama Vilapa - TS Narayana Sastri 1916
12. Drishtah Svatantryasangramah - Vidyanidhi Pandey 1999 (RSS)
13. Dukhadruma Kutharah - Ambikadatta Vyasa 1885
14. Durgesanandini & Kshatriyaramani of Srisaila Tatacharya in Sahridaya vol 13
15. Ekavira - Visvanatha Satyanarayana, TG Vasantalakshmi 2013 (SSSU)
16. Gadya Rukminisa Vijayah - Vadiraja, VB Tadakod 1987
17. Guhavasi - Satyaprakash Singh 1991 (Meherchand)
18. Jayantika - Jaggu Vakulabhushana Mahakavi 1990
19. Kanakalata (Adaptation of Shakespeare's Lucrace) - Kalyanarama Sastri (Sahridaya and Tanjore)
20. Kankalah - Jayasankar Prasad, Sobhakant Jayadev Jha 2014
21. Kumudini - Rajagopala Chakravarti
22. Kumudini Chandra - Medhavritacharya 1952
23. Kumudinichandra of Medhavratacharya (LR Scans located)
24. Kusumalakshmih - AR Ratnaparakhi 1961
25. Lalita Madhavam (Garreth and Lynette of Tennyson) - KAPY Dikshit 1988
26. Manoramamadhavam of VP Tatake published from Mumbai
27. Muko Ramagirirbhutva with Hindi Translation - Harshadeva Madhava, Manjula Sarma 2008 (RSS)
28. Padmini - Mohan Lal Sarma Pandey 1999
29. Pasyatohara - Bhatta Mathuranatha Sastri
30. Purna (Sanskrit Novel) - Ganapati Muni 2008 (Collected Works Vol 10)
31. Rina Vimukti - HV Nagaraj Roa 2006 (Samskrita Bharati)
32. Ritam - Keshava Chandra Dash 1988 (DVP)
33. Sagara Vihangama (Jonathan Livingston Seagull) - Kirtitrayi 2006
34. Samsara Chakram of Jagannathaprasada Chaturvedi Parts 1 & 2 - PB Anantacharya 1930
35. Sarala - Haridasa Siddhantavagisa Bhattacharya
36. Saudamani (Sowdamni) and Kiratarjuniya Sangraha - K Narsimhacharya 1934
37. Siddhartha - Herman Hesse, L Sulochana Devi 2008
38. Siddhartha - Herman Hesse, Muni Kalyanakirtivijaya 2013
39. Sikha - Keshava Chandra Dash 1994
40. Subbanna (From Kannada) - Masti Venkatesa Iyengar, N Venkatesa Sarma 1993 (AKSP)
41. Sujanamana Kumuda Chandrika of Timmakavi (not published)
42. Surya Prabha Kim Va Vaibhava Pisachah - Srinivasa Sastri 1968
43. Udayana Charitam - V Anantacharya 1924
44. Umrao Jan Ada (Sanskrit Translation of Urdu Novel) - Mirza Hadi Ruswa, Shwetaketu 2016 (ABMSSPSS)
45. Vasudeva (Sanskrit Novel) - Narendra Kohli, Sarita Krishna Sastri 2011 (SB)
46. Vasupujya Charitram (Gadyabaddham) - Jagadananda Jha 1942
47. Visvamitra - Nilakantha Sastri 1934
48. Viyoga Vallari - Durgadatta Sastri 1987
49. Yajnaseni (Translation of Oriya Novel) - Pratibha Rai, Bhagirathi Nanda 2006 (RSS)
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50. Sanskrit Translations of Bengali Novels of Bankim Chandra
51. Anandamatha Sanskrit Translation - Sivacharana Sarma 2011 (Samskrita Bharati)
52. Lavanyamayi - Appasastri Rasiwadekar 1947 (Varanasi)
53. Saivalini (Translation of Chandrasekhar of Bankim Chandra) - Rajagopala Chakravarti 1917
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54. Historic Novels by Shrinath Hasurkar
55. Ajatasastru
56. Chennamma
57. Davanala
58. Pratijnapurti
59. Sindhukanya
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60. Sanskrit Translations of Kannada Novels of Bhyrappa published by Samskritabharati
61. Anathosi
62. Aavaranam
63. Dharmasree
64. Saarthah
65. Vamsavriksha
regards
shankara